I spent a while today and last night trying to solve some puzzle caches, but with every one, the GeoChecker said I was wrong...

I have tried "Exact Change Only (GC435TD)", "ALFIE! ALFIE! ALFIE! (GC3KCTJ)", "Carp River Crossing (GC3ABF0)" and "BEA POTTER'S PRECIOUS ONES (GC31A0Y)", and I cannot solve any...what am I doing wrong???

If anyone owns these and cares to help me out, it would be appreciated! I have done all of the research for them, have all of the answers...but apparently, my calculations are mistaken, and I don't know why

From what I remember on digital roots, a number's digital root is, as an example:

38921=3+8+9+2+1=23=2+3=5

For letters, a=1, b=2, c=3, etc, and so on...but the final result is found the same way...

Is there a trick to it in Ottawa? Or have I just gotten that rusty??

...frustration setting in as I think I perhaps should revert to writing and editing this week instead of caching!!